Raisinhat t1_iub1qv7 wrote on October 29, 2022 at 11:19 PM

Reply to comment by deusrex_ in Eli5 why do pregnancy testers not have a yes or no indication on the screen instead of the symbols and then matching them? by googleimages69420

Spoiler alert: that is exactly how they work

hypermog t1_iub84r0 wrote on October 30, 2022 at 12:10 AM

I see in one of those tweets that the CPU in this pregnancy test is faster than my family’s first personal computer

nerdguy1138 t1_iub94r2 wrote on October 30, 2022 at 12:18 AM

And it can run doom!

arcosapphire t1_iubxfw3 wrote on October 30, 2022 at 3:47 AM

Well, the one in the teardown thread specifically can't.

Exist50 t1_iubyebv wrote on October 30, 2022 at 3:56 AM

IIRC, that guy just replaced the internals with ones that could run Doom, sadly.

kasteen t1_iuc0izz wrote on October 30, 2022 at 4:18 AM

>As Turing explains, the test's "existing CPU can't be reprogrammed and the existing LCD can only show 4 things, so I had to replace both to make any changes. And the current version doesn't even fit into the shell! (although I'm certain it will when complete)."

It isn't running on the hardware from the pregnancy test at all. It's just a computer that may or may not fit inside of the test.

arcosapphire t1_iubxe0l wrote on October 30, 2022 at 3:46 AM

That thread was super cool. Is there a subreddit for "how they work" kinds of things like this? I mean obviously this person does stuff like that on Twitter, but I have always hated Twitter's format and never know how to navigate things properly. (Plus now it's a total shitshow with the recent corporate drama.)